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35 lines
1.1 KiB
C++
Executable File
35 lines
1.1 KiB
C++
Executable File
#ifndef AWS_COMMON_ATOMICS_FALLBACK_INL
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#define AWS_COMMON_ATOMICS_FALLBACK_INL
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/*
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* Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License").
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* You may not use this file except in compliance with the License.
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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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AWS_EXTERN_C_BEGIN
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#ifndef AWS_ATOMICS_HAVE_THREAD_FENCE
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void aws_atomic_thread_fence(enum aws_memory_order order) {
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struct aws_atomic_var var;
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aws_atomic_int_t expected = 0;
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aws_atomic_store_int(&var, expected, aws_memory_order_relaxed);
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aws_atomic_compare_exchange_int(&var, &expected, 1, order, aws_memory_order_relaxed);
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}
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#endif /* AWS_ATOMICS_HAVE_THREAD_FENCE */
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AWS_EXTERN_C_END
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#endif /* AWS_COMMON_ATOMICS_FALLBACK_INL */
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